Ok, never mind, I figured out how to fix this. When I installed Poser Pro, I set up a separate Download content library (as recommended). So I uninstalled the Victoria 4.2 I had installed in the Poser Pro application folder & re-installed it in my Download content folder (after first putting a fake Poser.exe file in it to satisfy the DAZ installer). Poser Pro was then able to find it & all seems to be working fine now.

"Every child is an artist. The problem is how to remain an artist once we grow up." - Picasso